Backrest for bleacher seats



FIG. 1 is a front perspective view of a backrest for bleacher seats showing my new design, the fragmentary seat depicted by means of broken lines being shown for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a side elevational view taken from the right side of FIG. 2, the left side view being a mirror image thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design for a backrest for bleacher seats, as shown and described. 